Patents by Inventor Yuji Okuda

Yuji Okuda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8795491
    Abstract: A method of processing a sensor element includes the steps of: (a) preparing a gas atmosphere containing hydrocarbon, having an air-fuel ratio of 0.80 to 0.9999, and having a small amount of oxidizing gas added thereto; and (b) subjecting a sensor element to a heat treatment in the gas atmosphere at a temperature of 500° C. or higher for 15 minutes or longer. The sensor element includes an electrochemical pumping cell constituted of an oxygen-ion conductive solid electrolyte and an electrode having a NOx reduction ability. A NOx gas in a measurement gas is reduced or decomposed in the electrode. A NOx concentration in the measurement gas is obtained based on a current which flows in the electrochemical pumping cell at a time of the reduction or decomposition.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: August 5, 2014
    Assignees: NGK Insulators, Ltd., NGK Ceramic Device Co., Ltd.
    Inventors: Tetsuya Ishikawa, Sumiko Horisaka, Yuji Okuda
  • Publication number: 20140095027
    Abstract: A driving assistance apparatus includes: an advancement direction travel control unit that performs travel control in an advancement direction by applying at least one of a driving force and a braking force to a vehicle; an execution determination unit that determines whether or not the travel control in the advancement direction is being executed by the advancement direction travel control unit; and a driving assistance unit that performs driving assistance on the basis of a travel condition in the advancement direction of the vehicle, wherein the driving assistance unit suppresses the driving assistance when the execution determination unit determines that the travel control in the advancement direction is being executed by the advancement direction travel control unit.
    Type: Application
    Filed: September 27, 2013
    Publication date: April 3, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yuji OKUDA
  • Patent number: 8480870
    Abstract: A gas sensor element, wherein an amount of flexure in a first section extending in a longitudinal direction of the sensor element from the position 8/27 of a size of the element apart from one end of the element to the other end, is set to be greater than or equal to 1/1360 and less than or equal to 1/670 with respect to the size in the longitudinal direction of the element. The amount of flexure is a sum of a distance from a regression line to an upper side maximum displacement point and a distance from the regression line to a lower side maximum displacement point when calculating the regression line representing the relation of the position X in the longitudinal direction of the element and the displacement Y in a thickness direction from a plurality of data sets showing the relation of position X and displacement Y.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: July 9, 2013
    Assignees: NGK Insulators, Ltd., NGK Optoceramics Co., Ltd.
    Inventors: Yoshio Suzuki, Kunihiko Nakagaki, Yuji Okuda
  • Patent number: 8226784
    Abstract: A method of forming a laminated body includes a first lamination step of forming a preceding lamination sheet which is substantially treated as one green sheet initially by laminating and bonding at least two green sheets together out of a plurality of green sheets; a printing step of printing a predetermined pattern on the preceding lamination sheet and at least one non-preceding lamination sheet which is a not used for forming the preceding lamination sheet; and a second lamination step of laminating and bonding the preceding lamination sheet and non-preceding lamination sheet, on which the predetermined pattern is printed in the printing step, in a predetermined order.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: July 24, 2012
    Assignees: NGK Insulators, Ltd., NGK Optoceramics Co., Ltd., NGK Printer Ceramics Co., Ltd.
    Inventors: Yuji Okuda, Shin Murai
  • Publication number: 20120159771
    Abstract: A gas sensor element, wherein an amount of flexure in a first section extending in a longitudinal direction of the sensor element from the position 8/27 of a size of the element apart from one end of the element to the other end, is set to be greater than or equal to 1/1360 and less than or equal to 1/670 with respect to the size in the longitudinal direction of the element. The amount of flexure is a sum of a distance from a regression line to an upper side maximum displacement point and a distance from the regression line to a lower side maximum displacement point when calculating the regression line representing the relation of the position X in the longitudinal direction of the element and the displacement Y in a thickness direction from a plurality of data sets showing the relation of position X and displacement Y.
    Type: Application
    Filed: March 5, 2012
    Publication date: June 28, 2012
    Applicants: NGK Optoceramics Co., Ltd., NGK Insulators, Ltd.
    Inventors: Yoshio SUZUKI, Yuji Okuda, Kunihiko Nakagaki
  • Patent number: 8086372
    Abstract: The present invention aims at providing a steering assistance apparatus which can accurately detect a curve exit of a running path and perform steering assistance control with an excellent running path following capability. The steering assistance apparatus of the present invention is a steering assistance apparatus 1 for providing a steering mechanism with a steering torque such that a vehicle runs along a running path according to an image capturing the running path in front of the vehicle, which estimates a curve direction of the running path by processing the image, estimates a steering direction of a driver of the vehicle according to a steering operation of the driver, and determines that the vehicle is running through a curve exit according to a fact that the estimated curve direction and steering direction do not coincide with each other. This makes it possible to determine the curve exit of the running path accurately and perform appropriate steering assistance control.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: December 27, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yuji Okuda, Seiji Kawakami, Katsuhiko Iwazaki, Hiroaki Kataoka, Chumsamutr Rattapon
  • Publication number: 20110240487
    Abstract: A method of processing a sensor element includes the steps of: (a) preparing a gas atmosphere containing hydrocarbon, having an air-fuel ratio of 0.80 to 0.9999, and having a small amount of oxidizing gas added thereto; and (b) subjecting a sensor element to a heat treatment in the gas atmosphere at a temperature of 500° C. or higher for 15 minutes or longer. The sensor element includes an electrochemical pumping cell constituted of an oxygen-ion conductive solid electrolyte and an electrode having a NOx reduction ability. A NOx gas in a measurement gas is reduced or decomposed in the electrode. A NOx concentration in the measurement gas is obtained based on a current which flows in the electrochemical pumping cell at a time of the reduction or decomposition.
    Type: Application
    Filed: March 4, 2011
    Publication date: October 6, 2011
    Applicants: NGK Insulators, Ltd., NGK Ceramic Device Co., Ltd.
    Inventors: Tetsuya ISHIKAWA, Sumiko HORISAKA, Yuji OKUDA
  • Publication number: 20100004822
    Abstract: The present invention aims at providing a steering assistance apparatus which can accurately detect a curve exit of a running path and perform steering assistance control with an excellent running path following capability. The steering assistance apparatus of the present invention is a steering assistance apparatus 1 for providing a steering mechanism with a steering torque such that a vehicle runs along a running path according to an image capturing the running path in front of the vehicle, which estimates a curve direction of the running path by processing the image, estimates a steering direction of a driver of the vehicle according to a steering operation of the driver, and determines that the vehicle is running through a curve exit according to a fact that the estimated curve direction and steering direction do not coincide with each other. This makes it possible to determine the curve exit of the running path accurately and perform appropriate steering assistance control.
    Type: Application
    Filed: August 6, 2007
    Publication date: January 7, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuji Okuda, Seiji Kawakami, Katsuhiko Iwazaki, Hiroaki Kataoka, Chumsamutr Rattapon
  • Publication number: 20090242403
    Abstract: A gas sensor element, wherein an amount of flexure in a first section extending in a longitudinal direction of the sensor element from the position 8/27 of a size of the element apart from one end of the element to the other end, is set to be greater than or equal to 1/1360 and less than or equal to 1/670 with respect to the size in the longitudinal direction of the element. The amount of flexure is a sum of a distance from a regression line to an upper side maximum displacement point and a distance from the regression line to a lower side maximum displacement point when calculating the regression line representing the relation of the position X in the longitudinal direction of the element and the displacement Y in a thickness direction from a plurality of data sets showing the relation of position X and displacement Y.
    Type: Application
    Filed: March 25, 2009
    Publication date: October 1, 2009
    Applicants: NGK Insulators, Ltd., NGK Optoceramics Co., Ltd.
    Inventors: Yoshio Suzuki, Yuji Okuda, Kunihiko Nakagaki
  • Publication number: 20090188620
    Abstract: A method of forming a laminated body includes a first lamination step of forming a preceding lamination sheet which is substantially treated as one green sheet by laminating and bonding at least two green sheets out of a plurality of green sheets with predetermined pattern printed thereon; a printing step of printing a predetermined pattern on the preceding lamination sheet and at least one non-preceding lamination sheet which is a not used for forming the preceding lamination sheet; and a second lamination step of laminating and bonding the preceding lamination sheet and non-preceding lamination sheet, on which the predetermined pattern is printed in the printing step, in a predetermined order.
    Type: Application
    Filed: January 23, 2009
    Publication date: July 30, 2009
    Applicants: NGK Insulators, Ltd., NGK Optoceramics Co., Ltd., NGK Printer Ceramics Co., Ltd.
    Inventors: Yuji Okuda, Shin Murai
  • Patent number: 7040963
    Abstract: A table for a wafer polishing apparatus having superior heat-resistant, anti-thermal-shock, and anti-abrasion characteristics and capable of increasing the diameter of a semiconductor wafer while improving the quality of the wafer. The table (2) includes a plurality of superimposed bases (11) each of which is formed of silicide ceramic or carbide ceramic. The bases (11) are joined together by an adhesive layer (14). A fluid passage (12) is formed in a joining interface between the bases (11).
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: May 9, 2006
    Assignee: Ibiden Co., Ltd.
    Inventors: Yuji Okuda, Naoyuki Jimbo, Kazutaka Majima, Masahiro Tsuji, Hideki Takagi, Shigeharu Ishikawa, Hiroyuki Yasuda
  • Patent number: 7029379
    Abstract: A method for manufacturing a wafer holding plate for a wafer grinding apparatus wherein the plate includes a substrate having a wafer adhering surface to which a semiconductor wafer is adhered by an adhesive. The wafer adhering surface includes a mirror-like surface portion and a groove pattern, which anchors the adhesive. When the plate is used for grinding wafers, the quality and accuracy of the finished wafers is greatly improved.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: April 18, 2006
    Assignee: Ibiden Co., Ltd.
    Inventors: Naoyuki Jimbo, Yuji Okuda, Shigeharu Ishikawa, Atsushi Mishima
  • Publication number: 20050260938
    Abstract: A table for a wafer polishing apparatus having superior heat-resistant, anti-thermal-shock, and anti-abrasion characteristics and capable of increasing the diameter of a semiconductor wafer while improving the quality of the wafer. The table includes a plurality of superimposed bases each of which is formed of silicide ceramic or carbide ceramic. The bases are joined together by an adhesive layer. A fluid passage is formed in a joining interface between the bases.
    Type: Application
    Filed: July 28, 2005
    Publication date: November 24, 2005
    Inventors: Yuji Okuda, Naoyuki Jimbo, Kazutaka Majima, Masahiro Tsuji, Hideki Takagi, Shigeharu Ishikawa, Hiroyuki Yasuda
  • Publication number: 20050260930
    Abstract: A table for a wafer polishing apparatus having superior heat-resistant, anti-thermal-shock, and anti-abrasion characteristics and capable of increasing the diameter of a semiconductor wafer while improving the quality of the wafer. The table includes a plurality of superimposed bases each of which is formed of silicide ceramic or carbide ceramic. The bases are joined together by an adhesive layer. A fluid passage is formed in a joining interface between the bases.
    Type: Application
    Filed: July 28, 2005
    Publication date: November 24, 2005
    Inventors: Yuji Okuda, Naoyuki Jimbo, Kazutaka Majima, Masahiro Tsuji, Hideki Takagi, Shigeharu Ishikawa, Hiroyuki Yasuda
  • Publication number: 20050245177
    Abstract: A method for manufacturing a wafer holding plate for a wafer grinding apparatus wherein the plate includes a substrate having a wafer adhering surface to which a semiconductor wafer is adhered by an adhesive. The wafer adhering surface includes a mirror-like surface portion and a groove pattern, which anchors the adhesive. When the plate is used for grinding wafers, the quality and accuracy of the finished wafers is greatly improved.
    Type: Application
    Filed: July 6, 2005
    Publication date: November 3, 2005
    Inventors: Naoyuki Jimbo, Yuji Okuda, Shigeharu Ishikawa, Atsushi Mishima
  • Patent number: 6916228
    Abstract: A wafer holding plate for a wafer grinding apparatus. The plate includes a substrate having a wafer adhering surface to which a semiconductor wafer is adhered by an adhesive. The wafer adhering surface includes a mirror-like surface portion and a groove pattern, which anchors the adhesive. When the plate is used for grinding wafers, the quality and accuracy of the finished wafers is greatly improved.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: July 12, 2005
    Assignee: Ibiden Co., Ltd.
    Inventors: Naoyuki Jimbo, Yuji Okuda, Shigeharu Ishikawa, Atsushi Mishima
  • Publication number: 20030008598
    Abstract: A wafer holding plate for a wafer grinding apparatus. The plate includes a substrate having a wafer adhering surface to which a semiconductor wafer is adhered by an adhesive. The wafer adhering surface includes a mirror-like surface portion and a groove pattern, which anchors the adhesive. When the plate is used for grinding wafers, the quality and accuracy of the finished wafers is greatly improved.
    Type: Application
    Filed: September 5, 2002
    Publication date: January 9, 2003
    Inventors: Naoyuki Jimbo, Yuji Okuda, Shigeharu Ishikawa, Atsushi Mishima
  • Patent number: 6475068
    Abstract: A wafer holding plate for a wafer grinding apparatus. The plate includes a substrate having a wafer adhering surface to which a semiconductor wafer is adhered by an adhesive. The wafer adhering surface includes a mirror-like surface portion and a groove pattern, which anchors the adhesive. When the plate is used for grinding wafers, the quality and accuracy of the finished wafers is greatly improved.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: November 5, 2002
    Assignee: Ibiden Co., Ltd.
    Inventors: Naoyuki Jimbo, Yuji Okuda, Shigeharu Ishikawa, Atsushi Mishima
  • Patent number: 5991872
    Abstract: Microprocessors use a conditional branch instruction so as to change processing in accordance with conditions. According to the prior art, a NOP instruction, which causes no operation, is used when a condition is satisfied, and the use of the NOP instruction inevitably lengthens the processing time. According to the present invention, a conditional transfer instruction is included in the instruction set of a microprocessor, and a flag decoder is additionally employed. The flag decoder determines whether a condition is satisfied or not, and outputs a control signal on the basis of the determination. The control signal is supplied to the instruction decoder of the processor to make a data transfer operation effective or ineffective. Accordingly, it is not necessary to use a NOP instruction, and the processing time can be as short as possible.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: November 23, 1999
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mikio Shiraishi, Masaki Saitou, Yuji Okuda
  • Patent number: RE36646
    Abstract: This invention provides a novel speech coding system which recursively executes a filter-applied "Toeplitz characteristic" by causing a drive signal (i.e., an excitation signal) to be converted into a "Toeplitz matrix" when detecting a pitch period in which distortion of the input vector and the vector subsequent to the application of filter-applied computation to the drive signal vector in the pitch forecast called either "closed loop" or "compatible code book" is minimized. The vector quantization method substantially making up the speech coding system of the invention is characteristically used by the system.
    Type: Grant
    Filed: July 19, 1995
    Date of Patent: April 4, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masami Akamine, Yuji Okuda, Kimio Miseki